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Understanding Diamond Cut and How It Affects Price and Beauty

While considering the cut of a diamond as the most important factor for its beauty, the cut determines the brilliance of the diamond. This is based on reflection, dispersion, and scintillation of the light. Unlike color and clarity, there is not a single grade that defines it.

Furthermore, Diamonds are similar in weight, color, and clarity but differ in appearance and value. This is because of differences in cut quality.


The cut is the most complicated of the 4Cs. Carat weight, color, and clarity, with their value and rarity, result in a diamond’s formation. Cut precision is the result of human decision and diamond-cutting skills. Nowadays, it’s possible to have a better cut with the use of high technology in the diamond industry.

The difference between a dull lump of rock and a dazzling diamond comes down to the cut, which gives the sparkle to the stone. There are no limits to the different shapes a diamond can be cut, including round, princess, cushion, oval, marquise, pear, emerald, and heart.

Diamond cuts are rated as excellent, very good, good, fair, or poor depending on how they measure up to the following:

How does the diamond look from above and what is its face-up appearance? Is it bright? Does it have a fire?

How the Diamond Cut is Designed?

Has it been well crafted? This usually takes into consideration the polish and symmetry of the cut. Good symmetry will make a diamond bright and scintillating. The craftsmanship affects how the light passes through the diamond and reflects out of it. A good polish ensures a smooth surface to the rock.

Expert tip: Round brilliant cut diamond are perennially the most popular shape of a diamond – but they’re also the priciest. Carat for carat, you may be able to get a larger diamond for the same price, if it’s a different shape.



Proportions: the relative sizes and angles of the diamond’s parts and facets

Symmetry: the precision of the cut design, especially the facets

Polish: the smoothness and luster of the diamond’s surface

Raw diamonds need to be cut and polished into polished diamonds in order to be ready for sale.

The quality of a diamond’s cut is determined by various proportions. Major is How its been Faceted with reference to different proportion that Reflect best light and evenness. According to the grading scale, the cut can be poor, fair, good, very good, and excellent.

Diamond cutters are aware of how certain proportion combinations enable the diamond to capture light as well as possible and also maximize its brilliance and sparkle.

However, when faceting the rough diamond, the proportions are not the only thing that should be taken care of, as the cut influences the other features of a diamond.

Many times it is impossible to cut a diamond that is quite big and clear to exact excellent proportions. Because faceting them in an exact manner might lose much weight and we lose the even size parameters. This will not only reduce the size but subsequently also reduce its overall value. So many times in order to achieve a higher Yield out of rough the optimal and most desired result

Although these are the crucial or basic factors that determine the value and price of a diamond, there are many different factors that determine the Basic quality and value of a polished diamond.


Henceforth, you can see the reference of cut grades on a diamond certificate. Often using the GIA standards of Excellent, Very Good, Good, Fair, and Poor. For the most part, the actual measurements are found on the laboratory reports.


  Excellent Very Good Good Fair Poor
Table % 53 - 63 52 or 64 - 65 51 or 66 - 68 50 or 69 - 70 < 50 or > 70
Depth % 58 - 62 56 - 57.9 or 62.1 - 66 53 - 55.9 or 66.1 - 71 50 - 52.9 or 71.1 - 74 < 50 or > 74

Very thin - Slightly Thick

Very thin or Thick Very thin to Very thick Ex. Thin to Ex.think
Culet None Very Small Small Medium > Medium
L/W ratio .95 - 1.02 .89 - .94 or 1.03 - 1.05 .83 - .87 or 1.06 -1.10 .80 - .83 or 1.11 - 1.15 >.80 or < 1.15


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A cut is the Diamond's Important characteristic. It has the greatest influence on Diamonds beauty and it determines what we generally think of as sparkle

As a Gemologist, I will recommend you to select the highest cut grade that fits your budget. The reason is simple: because of the Four Cs, no other character has a greater influence on a diamond’s appearance.

A diamond’s cut grade is an aim measure of a diamond’s light performance, or, what we generally think of as sparkle. When the cut of a diamond is in proper proportion the light reflects out of the diamond. Gemologists prefer this as the table. (Learn more about Diamond Depth & Table ) If the cut is too shallow light leaks out of the bottom too deep and it escapes out of the side.

Diamond Cut FAQs:

What is a Diamond Cut?

Firstly, the term “Cut” has two references. One is the diamond’s shape and the other is the quality. Determined by its proportions, symmetry, and polish.

Which is the top selling Diamond Cut?

The top-selling diamond cut shape is the round brilliant cut. After that comes Princess, Cushion, Oval, Emerald, pear, Asscher, Heart, Radiant, and Marquise also these Cuts are known as Fancy Shapes.

Which diamond cut grade is right for me?

For the best ideal cut look for the Ideal or Excellent Cut. For the best possible cut, look for the Ideal or Excellent Cut. Each higher-cut diamond is hand-selected and cut to the most exacting standards. This guarantees one of the finest cuts available in the world.

Diamonds with a good or very good cut grade represent a combination of beauty and value. Contact us to know more about the cut, including its fire, brilliance, polish, symmetry,.etc.

What are others offering?

Most online retailers offer very well to fair-grade diamonds. Although the picture may or may not depict the actual product they are selling. Every diamond clarity has its own price. Most diamond companies online fool people online with fake pictures. So always ask for real pictures while buying online and must be sure of what you are buying.

We offer Ideal to Good Cut of loose diamonds, on the fact that every quality has its own price and value.

How Does Cut Grade Affect Price?

Cut does not mean the diamond's shape (e.g. round, Princess, emerald, etc.) but the Way diamond has been Faceted to proportions, symmetry, and polish. You might be of the opinion that diamond Carat weight, color, and Clarity are the main determinants of the diamond's final Value. But Diamond cut also matters one of the most.

Though extremely difficult to analyze and quantify, the diamond cut has three primary effects on appearance: brilliance (the brightness created by the combination of all the white light reflections from the surface and the inside of a polished diamond), fire (the dispersion of light into the colors of the visible spectrum, seen as Glittering effect of lights), and scintillation (the flashes of light and dark, or sparkle, when a diamond or light source is moved).

While cutting and polishing raw diamonds, Raw material is Cut and Polished in order to Get the Best Shape, proportion and luster. Higher the Cut (excellent to Ideal), the price and overall value are higher. Lower the Cut (poor to Very poor Grade) the price moves lover. Often Diamond cutters decide to reduce more weight in order to achieve the best cut as that will yield higher returns in terms of value.

What is the best cut for a Diamond?

The best cut is always an Excellent Cut diamond. But it all depends on the Cutter as he is the one who decides which cut and shape the diamond must be cut to get an overall value. It’s the diamond cutter who decides which shape and cutting grade yield more value out of rough stones. Sometimes he even sacrifice an Excellent cut for Very good cut to get more higher carat weight to get higher returns. But for Diamond Buyers, I always respect go for the Excellent cut.

What's the difference between a diamond cut and a diamond shape?

Diamond Shape refers to which Shape the diamond is cut into out of the Raw diamonds. There is a wide variety of shapes like Round, princess, emerald, pear, oval, heart, and another dozen of shapes into which the uneven rough diamond can be converted into.

On the Other side diamond Cut refers to in any of the shapes, how proportionately the polished diamond has been cut and polished. Each facet of the diamond has been as per perfect Angle and direction or not. Better is the Cut, its luster and fire are excellent.

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